package lab02.test32;

import java.util.HashMap;
import java.util.Map;


public class Test {
    public static void main(String[] args) {
        Map<String,String> map=new HashMap<>();

        //向MAp中添加数据
    map.put("id","1");
    map.put("name","张三");
    map.put("gender","男");
    map.put("age","25");
    map.put("love","爱学java");

    for(Map.Entry<String,String>entry:map.entrySet()) {

        System.out.println(entry.getKey()+":"+entry.getValue());
    }
        System.out.println("集合的大小："+map.size());

    //删除集合中键为AGE的元素
        for(Map.Entry<String,String>entry:map.entrySet()){
            if(entry.getKey().equals("age")){
                map.remove(entry.getKey());
            }
        }
        System.out.println("集合的大小："+map.size());
    }
}
